I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...

Arduino RFID Access Control using a RC522 RFID reader with SPI interface on your Arduino You define a Master Card which is act as Programmer then you can able to choose card holders who will granted ...

","Download RFID RC522 MFRC522 Arduino Library","","https://www.arduinolibraries.info/libraries/mfrc522","![RFID-RC522](https://3.bp.blogspot.com/-LIRYnr98scs ...

Abstract: Identification of corrosion in the tool industry is very important because it minimizes the impacts and losses due to damage to the tools used. Although there is already a corrosion ...

[Sigurd] manage to obtain an old vending machine from his dorm. The only problem was that the micocontroller on the main board was broken. He and his friend decided they could most likely get the ...